- noting or pertaining to the earlier half of the Precambrian Era, from about 5 billion to 2.5 billion years ago, during which the earliest datable rocks were formed and from which the oldest known fossil forms, blue-green algae and bacteria, have been recovered.
- the Archeozoic division of geologic time or the rock systems formed then.
Origin of Archeozoic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for archaeozoic
Historical Examples of archaeozoic
The remainder of Finland is built up of the oldest known crystalline rocks belonging to the Archaeozoic or Algonkian period.
esp US Archeozoic
- a former word for Archaean
- a variant spelling (esp US) of Archaeozoic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- Another spelling of Archeozoic.
- See Archean.
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